Mupirocin reduces ciliary beat frequency of human nasal epithelial cells

R Birk1, C Aderhold2, A Wenzel2

  • 1Department of Otorhinolaryngology Head and Neck Surgery, University Hospital Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany. richard.birk@umm.de.

Insights

Mupirocin nasal decolonization significantly reduces ciliary beat frequency (CBF) in nasal epithelial cells. This suggests careful use of mupirocin is necessary, with strict medical indications and added precautions.

Area of Science:

  • Otorhinolaryngology
  • Microbiology
  • Pharmacology

Background:

  • Mupirocin is a widely used topical antibiotic for skin infections and Staphylococci nasal decolonization.
  • Data on mupirocin's impact on nasal mucosa, specifically ciliary beat frequency (CBF), is limited.
  • Nasal ciliary function is crucial for mucociliary clearance and respiratory health.

Purpose of the Study:

  • To investigate the effects of mupirocin-calcium on the ciliary beat frequency (CBF) of human nasal epithelial cells.
  • To determine if therapeutic concentrations of mupirocin impact nasal mucosa function.

Main Methods:

  • Human nasal epithelial cells were exposed to mupirocin-calcium dissolved in tert-butyl alcohol (TBA) at various concentrations.
  • Ciliary beat frequency (CBF) was measured using phase contrast microscopy and the SAVA system.
  • Ringer's lactate solution and TBA alone served as negative controls.

Main Results:

  • Mupirocin-calcium in TBA caused a significant, time- and concentration-dependent decrease in CBF.
  • Tert-butyl alcohol (TBA) alone also reduced CBF, but to a lesser extent than mupirocin/TBA.
  • These findings indicate a detrimental effect of mupirocin solutions on ciliary function.

Conclusions:

  • Mupirocin-calcium solutions at therapeutic concentrations significantly reduce CBF in human nasal epithelia.
  • The use of mupirocin for nasal decolonization warrants caution, requiring strict medical indications and supplementary protective measures.
  • Further research into the long-term effects and alternative decolonization strategies may be needed.